Typewriting-calculating machine



Sept. 30, 1941.

R. ANSCHTZ ET AL TYPEwRITING-CALCULATING MACHINE Filed July 14, 1938 lO Sheets-'Sheet l Sept. 30, 1941.` R. ANSCHUTZ ET AL TYPEWRII'ING-CALCULATING MACHINE Filed July 14, 1958 l0 Sheeis-Sheet 2 Sept. 30, 1941. R, ANscHUTZ ETAL 2,257,409

TYPEWRTING-CALCULATING MACHINE Filed July 14, 1958 1o Smeets-sheet s x cf) Sept 30, 1941 R. ANscHUTz ETAL 2,257,409

TYPEWRITTIG-CALCULATING MACHINE Filed July 14, 1958 l0 Sheets-Sheet 4 Sept 30, l941- R. ANscHU-rz *AL v 2,257,409

n TYPEWRITING-CALCULATING MACHINE Filed July 14, 1938 lO Sheets-Sheet 5 y w @Aanschaf Sept- 30, 1941. R ANscHu-rz ETAL 2,257,409

TYPEWRITING -VCALCULATING MACHINE Filed July 14, 1938 l0 Sheets-Sheet 6 In ven-fons Sept. 30, 1941. R. ANSCHTZ ETAL 2,257,409

TYPEWRITING'CALCULATING MACHINE Filed July 14, 1958 lO Sheets-Sheet 7 Filed July 14, 1938 l0. Sheets-Sheet 10 Fing.

Patented Sept. 30, 1941 TYIEWRITING-CALCULATING MACHINE Robert Anschiitz and Fritz Schmidt, Zella-Mehlis, Thuringia, Germany, assignors to Mercedes Buromaschinen Werke Aktiengesellschaft,

Zella-Mehlis, Thuringia, Germany Application July 14, 1938, Serial No. 219,262 In Germany August 7, 1937 (Cl. 23S-59) 4 Claims.

This invention relates to a typewriting-calculating machine with total and subtotal taking control mechanism for the automatic taking of totals by decimal places. In the machine, extra total taking control means is employed besides the totalising member introducing the Values.

Devices of this kind have already been proposed but had the drawbacks that their manipulation was difficult, that they were imperfect and that, therefore, they were not reliable in operation.

According to the invention it is rendered possible in a simple way to provide for subtotal taking by coupling the extra total taking control means as well as the totalising member to the calculating mechanism for total taking, and by uncoupling the extra total taking control means from the calculating mechanism after the takin of the total.

In the drawings, a' constructional example of the device according to the invention is illustrated.

Fig. 1 is a front elevation of a typewritingcalculating machine according to the invention.

Fig. 2 is a side elevation of the machine, viewed from the left.

Fig. 3 is a plan view of the machine.

Fig. 4 is a perspective illustration of the total taking key levers, and of the parts operated by them, viewed from the left. The individual parts have been shown remote from each other in this and in some other iigures, for the sake of clearness.

Fig. 5 is a, perspective illustration of the calculating mechanism, viewed from the left.

Fig. 5a is a detail.l

Fig. 6 shows further parts of the calculating mechanism in perspective view, viewed from the left.

Fig. 7 is a further perspective illustration, viewed from the front and the left.

Fig. 8 shows a portion of a form for calculating daily interest.

Fig. 9 shows the form as modiiied for operation in the machine according to the invention.

Figs. 10 to 15 show diagrammatically the position of the totalisers with respect to the columns of the form according to Fig. 9.

Figs. 16 Vand 17 show a detail of the control mechanism for the uncoupling of the total taking side, Fig. 16 showing the construction as made heretofore, and Fig. 17 showing the construction according to the invention.

Fig. 18 shows a number roller for positive totalisers.

Fig. 19 shows a number roller for negative totalisers.

Before the construction of the device according to the invention will be detailed, it will rst be ,explained for what work the device can be used,

and as an example the calculation of daily interest will be described. As is known, daily interest is calculated by the formula Capital Tatc of interest X days 100 X 36() The above formula is subdivided into the interest number and the interest denominator. The

lis illustrated by way of example. Line III shows a capital balance in debit of RM 5500.00. As this capital has yielded interest for one day only, the interest number, according to the above formula, is 1=55. Line VII shows a capital balance in debit of RM 13,570.00. This capital has yielded interest for four days. The interest number, therefore, is 135.70 4=approx. 543. The total of the two interest numbers is 598. If the rate of interest is 6%, the interest denominator is 60, and the total of the debit interest is 598:=RM 9.96.

For the device according to the invention, the form is arranged as shown in Fig. 9. The amounts entered under Capital balance are designated Daily interest numbers in columns C and D. If a capital, for instance, 1238, or 13,5'70 col-l umn C and D, remains unaltered for some days, the product is obtained automatically by subtotal taking from a column totaliser, as will appear later, and while at the same time addition is performed in another column totaliser which receives the totals of all daily interest numbers. The interest number appears times higher, for instance, instead of 598, Fig. 8, it is, more accurately, 59,780 in column F, Fig. 9. It is only necessary to divide by an interest denominator 100 times greater, to obtain the same amount, as before, i. e. RM 9.96.

General description of the machine The device according to the invention is supposed to be fitted to a typewriting-calculating machine of the type known as the Mercedes, with total taking control mechanism according to application Serial No. 146,897, filed June '1, 1937. This machine comprises a frame I (Figs. 1 to 3) enclosing the normal typewriting machine, a casing 3 for the calculating mechanism, the paper and totaliser carriage 4, and a bearing frame 5. A motor 6 is secured to the side wall 2 of the frame I for driving the machine. Among other parts, the typewriter keys 1, the shift keys 8, and the carriage return key 9 are arranged in the frame I. 'I'he decimal tabulator keys I0, the calculating keys and the total taking key I2 are arranged in the bearing frame 5.

The totalisers I4, I5, I9, I1, I8 and I9 are suspended from a totaliser suspension rail I3 secured to the front of the carriage 4. The totalisers |4 and I5, marked L, are dummies, they consequently do not contain a totalislng mechanism, but are, like the normal totalisers I6 to I9 equipped with controlling plates 20, 2| and 22 (Fig. 2) which control the calculating mechanism. The controlling plates serve for unlocking the locking means for the calculating mechanism, for operating coupling sleeves 23, 24 and 25 (Figs. 3 and 6), and for selecting the species of calculation. All totalisers I4 to I9 are closed by front plates 26 (Fig. 2) whose lower ends 21 are bent forward at right angles and in the calculating position of the totalisers move along a roller 28 mounted to rotate on a bracket 30 extending l from the front plate 29 of the casing 3 of the calculating mechanism. In this manner the totalisers I4 to I9 are held against lifting off in their calculating position.

Tabulator riders 33 are adjustably mounted on a tabulator rail 32 (Fig. 2) arranged along the plate 3| at the rear side of the carriage 4. Tabulator riders 33 are adjusted to conformity with the calculating positions of the totalisers I4 to I9, as defined by the columns A, B, C, D, H, F and G of the form in Fig. 9.

The controlling plate 22 by which the species is determined, acts on the horizontal arm of a controlling bellcrank 34 (Figs. 1, 3 and 7) in the calculating position of any dummy or active totaliser I4 to I9 to which the plate is secured. The bellcrank 34 is fulcrumed about a screw 35 at the front plate 29. Pivoted to the vertical arm of the bellcrank 34 is a connecting rod 36 the free end 31 of which engages a pin 39 with a hole 38. The pin 39 is arranged at the lower end of a rocking device 40 which is fulcrumed about a screw 4| at the inner side of the front plate 29. The rocking device 40 is equipped with another pin 42 at its upper end. The pins are arranged to alternately enter notches 39a and 42a in connecting rod 43, as the connecting rod is reversed by a pin 45 engaging in a slot 44. The pin 45 is riveted into an arm 46 of a three-armed lever 41 which is fulcrumed about a pin 48 at the inner side of the front plate 29. The arm 49 of the lever 41 is connected to the general change over key lever 50 which is mounted to swing about a screw 5| at the outer side of the front plate 29. A spring 53 attached to the arm 52 of the lever 4'! pulls the lever and the general change over key lever 50 clockwise. This movement is limited by the upper edge of the arm 49 striking a xed abutment 54.

A rod 55 is pivotally suspended on the general change over key lever 50 whose free forked end 5S embraces the shank of a rivet 58a on the left hand changing over key lever 58. By the means the carriage 4 is shifted upon depression of the general change over key 59. On the other hand, the general change over key lever 58 is not influenced when the shift key 8 is depressed.

In the initial position of the general change over key lever 50, the slide 43 which is controlled by the said lever ythrough pin-and-slot connection 45, 44, is operatively connected to the pin 39 in its notch 39a. The slide 43 is pivotally connected to an arm 60 secured on a shaft 6| which is mounted in the casing 3 of the calculating mechanism (Figs. 5, 6 and 7). A coupling arm 62 also secured on the shaft 8| is equipped with a pin 84. This pin engages in a groove in a spur gear 66 which is mounted to slide axially on a shaft 61. Bars 68 on the spur gear 66 engage in corresponding notches in a disk 69 which is keyed on the shaft 61. A second spur gear 10 is secured on the shaft S'I (Figs. 5 and 5a) the teeth of which are engaged by a tooth 1| on a pawl 'I2 in the locking position of ythe calculating mechanism. The pawl 'I2 is keyed on a locking shaft 13 mounted in the casing 3 of the calculating mechanism.

An arm 'I4 secured on the locking shaft 'I3 (Fig. 5) has a hook 15 which is inclined to one side and engages in a slot in a slide 16. The slide has a recess 11 with which it engages an extension 18 of a totalising sector 19 which is arranged to be moved into mesh with a gear wheel connected to the shaft 61. The sector 19 is the totalising member referred to in the introduction. In the initial position of the calculating mechanism the sector 19 is disengaged from the gear wheel 80. The sector 19 is fulcrumed on a swinging frame a by screws 8|. The frame is mounted to swing in the casing 3 of the calculating mechanism. A round bar 85 is held by eyes 82, 83 and 84 to be acted on by the totalising cams 86 of the totalising slides released by the calculating key levers, for instance, the cam ofthe totalising slide 81. A spring 89 which is attached to a fixed part of the calculating mechanism casing 3 with its free end, is connected to a-pin 88 on the swinging frame 85a and swings the swinging frame 85a and the sector 19 clockwise until the round bar 85 bears against the edge 90 of the totalising slide 81. The spring 89 is an energy accumulator for the sector, or totalising member 19.

A spur gear 9| is mounted to slide axially on the shaft 61 for the purpose of total taking. Bars 92 on the spur gear engage in notches in a disk 93 which is also secured on the shaft 61. The spur gear 9| is toothed and can be operatively connected to the teeth 99 on a zero setting slide |00 (Fig. 6) by pins 94 and 95 of the levers 96 and 91 which are keyed on a shaft 98. The operative connection is effected by a rib |0| (Fig. 5) of a guide |03 mounted to swing about the locking shaft 13. The rib engages a rectangular lug |04 of an arm |05 which is firmly connected to the locking shaft 13 on which it is seated. The lug |0I can, upon a swinging movement of the locking flap |02 in clockwise direction, act on the edge of a lever |01 rigidly connected to the shaft 98. Another arrn |09 on the shaft 98, with a point |08 at its end, can act on the locking tooth ||0 of a rocking device III which is mounted on a shaft ||2. A spring ||4 engaging the arm i|3 of the rocking device tends to swing the device anti-clockwise. The arm ||3 of the rocking device projects through a slot ||5 of a slide IIS which is mounted to move in vertical direction. With its lower edge ||1 (Figs. 4 and 5) the Slide H engages the upper edge H8 0f a 111g driving wheel and pitched at a distance suitable on a rocking device ||9 which is mounted to for driving several totalisers at the same time, the swing at the left hand outer side of the frame of coupling sleeve 23 and the spur gear |95 integral the machine about a screw |28, and is operated with the'sleeve, is mounted to turn and-"to slide in a manner to be described below. 5 on the main driving shaft |4|. In the initial An unlocking slide |2| (Figs. 5 and 6) which position of ythe sleeve, crown teeth |96 on the is movable vertically can act on the locking ap sleeve engage crown teeth |91 of a driver |98 arby its incline |22, and turn the nap, the lus |04, ranged firmly on the main driving shaft IM. At and the locking shaft 13, clockwise. The spur the right of the main driving wheel |12 and gear 9| is now moved into mesh with the teeth 10 pitched at the same-distance at the sleeve, an- 99 (Fig. 6) ofthe Zero setting Slide |00 through other spur gear |83 is mounted to turn whose parts IUI, |01, 93, 96, 9T, 94 and 95. The Zero crown Vteeth |82 mesh with th\I teeth |8| of the setting slide |88 and the unlocking slide |2| make coupling sleeve 24 mentioned. in the preceding up together the extra total taking means. paragraph. A spur gear |13 is secured on the A U-shaped bracket 345 is secured to the unl5 main driving shaftv I CI at the same distance as locking slide |2| and the lower edge |23 of the before. At the side of this, the coupling sleeve upper bar |24 of the bracket can act on a catch 25, also mentioned above, with its spur gear |94 |25 which is mounted to swing on a locking lever integral with the sleeve, is mounted on the main |28. A lug |21 on the catch is pulled against an driving shaft. In the initial position of the edge |28 on the lever by a spring |29. When the 20 sleeve, its crown teeth |9| mesh with the crown catch |25 is turned clockwise, the locking lever teeth |92 of a driver |93 rmly connected to the partakes` in this movement and a tooth |38 on main driving shaft. In the uncoupled position the lever is disengaged from a rack |3| on the of the spur gears |94 and |95, as will be described Zero setting slide |88. This slide is now lowered below, a stop tooth, now shown, issuing from the under the action of a rack |32 extending to the 25 casing of the calculating mechanism, enters in a typewriting mechanism-not shownand moving gap of each spur gear. The tooth holds that spur in the direction 0f arrow a, through parts |33 gear which'is uncoupled at the time, in such posito |36. tion that when the carriage moves the driving The descending Zero setting slide rotates the members |14 (Fig. 2) of the totalisers move clear main driving shaft |4| of the calculating mech- 30 of the spur gears |94 and |95. anism through its teeth 99 meshing with the spur A spur gear 228 is mounted to turn but held gear 9| on the shaft 61. and through a reversing against axial displacement on the main driving mechanism 66, |31, |38, |39 and |48. The deshaft |4| and crown teeth 22| on this spur gear scent is releasedby a cam plate |42 (Fig. 4) whose can be moved into mesh with the crown teeth 222 perimeter is engaged by a roller |43 (Figs. 4, 5 35 of a coupling sleeve 223. At a distance equal to and 6) at the lower end of the unlocking slide one pitch from each of the spur gears |12, |95, |2I. The cam plate |42 is rigidly connected to a |83, |13, |94 and 228, unlocking pawls 336 (Figs. second cam plate I 43a and both cam plates are 3 and 5) is secured on the locking shaft 13. Figs. mounted on a shaft |44. A coupling arm |45 2, 3 and 5). When the unlocking shaft is turned, which is mounted to slide on the cam plate |42, the pawls act on the unlocking levers 331 (Fig, 2) has a tooth |46 arranged to engage in spur gear of those places in the totalisers I6 to I9 which are |41 which is keyed on the shaft |44. in calculating position, and unlock them.

In the initial position of the machine, the tail A controlling lever |16 is mounted to swing end |48of the total taking key lever 263 prevents about a screw |11 (Fig. 6) in the front wall 29 the coupling arm from engaging with the spur of the casing 3. Pivotally connected to the congear |41 so that the cam plates |42 and |43a trolling lever is a slide |78 WhOSe free end is SUD- remain inactive. 'Ii'he total taking key lever 263 ported by an angular guide |19 (Fig. 3). An arm is mounted to swing about a bar |49. Its tail end 88 extending at right angles from the slide |18 |48 also acts on a rod |58 which, in a manner to engages in the groove of the coupling sleeve 24. be described below, effects the insertion of the 50 A tooth |84 at the left of the arm |80 can engage zero setting stop serving for the total taking from in one of the gaps of the spur gear |83 when the the totalisers. A locking member |52 is fulslide |18 has been moved in the direction of arcrumed on the total taking key lever 263 about row c and has disconnected the sleeve 24 and the a screw |5| and in the initial position of the total spur gear |83. This prevents the Spur gear |83 taking key lever a spring |55 holds a tooth |53 on 55 from shifting its pOSitOn Which might interfere the locking member against the slide |54a of a with the coupling. locking bar |54. 'Ihe tail end |56 of the locking A lever |86 is secured to the right-hand posimember |52 is placed at some clearance below a tion of the slide |18 by a screw |85. The free end rod |51 suspended on an arm |58. The arm is of the lever is guided in a slot |89 of an angular mounted to swing about a screw |59 in the front 60 guide |88 at the casing of the calculating mechwall of the casing 3 of the calculating mechanism, and an upwardly extending arm |98 on anism. A spring |68 attached to the arm turns the bracket |86 engages in the groove of the it clockwise until its edge I 6| engages below an sleeve 25. edge |62 of an angular guide |63. A pawl |64 is 65 A further member 200 engages the shank of pivoted on the arm |58 which is held against a a rivet 282 in the slide |18 by a slotted eye 28| pin |66 secured on the arm |58 by a spring |65, in a vertical extension of the member. In the The pawl |64 serves for unlocking the depressed initial DOSitOn 0f the member, the rounded end total taking key lever 263. K of the eye bears against the shank of the rivet.

The. other, hook-shaped, end of the member 208 The drive of the totahsers 16 and 17 70 surrounds, and is guided by, a shaft L in the At the center of the calculating mechanism, the casing of the calculating mechanism, and a lug known main driving gear wheel |12 (Fig. 6) is |99 on this end engages in the groove of the coukeyed on the main driving shaft |4| -described in pling-sleeve 23. When a controlling plate 2| in the preceding paragraph. At the left of themain one of the totalisers |4 to I9 swingsthe controlling lever |15, the coupling sleeves 24 and 25 can be shifted by the slide |18 separately or together with the coupling sleeve 23. The selective controlling or the coupling sleeves in two stages is eifected by different connuration of the controlling plates 2|, and by providing the slotted eye 20| in the member 250.

The items to be written in the column C of the form in Fig. 9 are positive and must therefore be calculated in a totaliser having the positive number rollers |10 illustrated in Fig, 18. In conformity, the totaliser I is equipped with the number rollers |19 as a positive totaliser in the column D of the form are negatives, and the totaliser I1 is therefore equipped with the negative number rollers |1I, Fig. 19, as a negative totaliser. As during one day debit and credit items are accounted and the absolute amount of the daily interest mustvappear either in the column C or the column D of the form, it is necessary that the two totalisers I 5 and I1 should cooperate side by side as a complementary totaliser unit.

In the booking operation which will now be performed the value 5100 in column A, line I of the form, must first be calculated. To this end. the carriage is moved into its final position at the right, the line I of the form is placed in position ready for writing, and the 1000 key lever of the decimal tabulator Il is depressed. The dummy I4 (Fig. 10) is now opposite the main driving wheel |12. At the same time the driving wheels |14 (Fig. 2) of totalisers I5 and I1 are operatively connected to the spur gears |13 (Figs. 6 and 10) and |94 with their 1000 places.

The dummy I4 is without the controlling plates 2| (Fig. 2) and 22. The coupling sleeves 23, Figs. 6 and 10, 24 and 25 therefore remain in their driving positions and the reversing mechanism 66, |31, |38, |39, |40 remains in its addition position 66, |31, |38, |39 corresponding to initial position. However, the control plate 20 (Fig. 2) acts on the lever 204 which holds the calculating mechanism locked (Figs. 3 and 7), swings the lever 204 and so releases the locking shaft 13 (Figs. 5 and 7) for unlocking.

When, corresponding to the 1000 place of the calculating mechanism, the calculating key II marked 5 is depressed, the value 5 is transmitted to the main driving shaft I4| by the corresponding cam plate element-not shownwhich drives the totalising slide 81 (Fig. 5) and through parts 86, 85, 85a, 19, 80, 61, 68, |31, |38 and |39. The main driving wheel |12 and the spur gear |83 turn idle since the dummies I4 and I5 (Fig. 10) have no mechanism. However, the spur gear |13 drives the driving wheel |14 of the totaliser I5 in the 1000 place and the corresponding value 5 on the corresponding number roller appears in the window of the totaliser I6. At the same time, the driving wheel |14 of the 1000 place in the totaliser I1 is driven by the spur gear |94. Since the totaliser I1 is negative, it displays the complementary value 9999 5000 for the value 5 (000). After the value 5 has been introduced in the totalisers I6 and I1, it is written in line I, column A of the form. The carriage now moves from the 1000 place into the 100 place of the involved totalisers. The calculating key 1 is now depressed. When in this manner the value 5100 has been introduced in the totaliser I6, the totaliser I1 shows the complementary value of 9999 4900. Now, if required, text is written in column H, line I of the form. I lhe carriage return key 9 is now depressed and the carriage is moved into its final position at the right, and at the same time the form is fed to the line II. The item 345 is calculated in the same way, the carriage return key 3 is depressed, the value is booked in line III of the form. The totaliser I l now contains the positive value 5500 and the totaliser I1 contains the complementary value 9999 4500.

'I'he item 5500 is now to be taken automatically from the totaliser I8 and written in column C of the form but the value 5500 must be conserved in the totaliser I l. The following device is provided for this purpose.

Preparation of total taking from totalizers 16 and 17 In the above said Mercedes typewriting calculating machine with automatic total taking, the unlocking slide acts on the locking flap |02 with its incline |22 under the pull of its springs 225 (Fig. 5) after the total taking key I2 has been depressed, and the cam plate |42 has been set in motion by coupling it to the shaft |44. The locking ilap |02 is turned clockwise and its guide body |03 engages the lever |05 and turns the locking shaft 13. The shaft, in a manner to be described below, eects the laying-in of the zero stop 228 (Fig. 7) for the totalisers, the unlocking of the calculating mechanism through the tooth 12 and the engagement of the totalising sector 19 with the spur gear 5I through parts 14, 15, 18 and 18.

During the descent of the unlocking slide which occurs herewith, the parts I32, |33, |35, |00 and 9| (Fig. 6) are also moved by a spring-not shown-engaging the part |32. The control of the movement occurs in consequence of the cooperation of the parts 351, 355 and 365, in dependence of the unlocking slide I 2 I.- During this movement the place of the totaliser to be cancelled, which is in calculating position, is set to zero by the zero setting slide.|00 through the reversing mechanism and the driving wheel oi' the calculating mechanism allotted to this totaliser. The zero position is attained a short time before the unlocking slide |2I has attained its lowermost position. At the end of the descent, the upper edge 221 of the unlocking slide I2| releases the locking flap |02, so that the flap, the locking shaft, and al1 parts connected to it, return into their initial positions. At the same time, the totalising sector 19 is moved out of mesh with the spur gear 80. This prevents the re-introduction of the same value into the cancelled place of the totaliser in consideration which would occur if it were omitted to swing the totalising sector laterally when it returns into its initial position.

With the subtotal taking from the totaliser I5, the daily interest number 5500 must be written in column C of the form, and must be withdrawn from the totaliser I6 without its being cancelled in this totaliser. To this end, return of the locking shaft 13 must be prevented when the unlocking slide 2| is in its lowermost position. For this purpose, a pawl or switch 228 (Figs. 2 and 5) is mounted to swing about a screw 229 at the upper end, and at the rear, of the unlocking slide I2I. The pull of a spring 4I0 attached to the pawl holds the inner side of a rectangularly arranged lug 230 against the edge 23| of the unlocking slide I 2|. A lever 232 secured on the locking shaft 13 at the side 0f the locking flap |02 can act on the upper edge 234 oi' the pawl with its lug 233 and swing the pawl clockwise during the normal total taking operation so that in this case the locking ap can swing forward. On the other hand a bellcrank 235 can engage behind the lug 230 of the pawl 228 with the face 236 (Fig. of its vertical arm 231 and hold the pawl against swinging. The bellcrank 235 is fulcrumed about a screw 240 in the' rear wall of the` casing 3 of the calculating mechanism, with the end 238 of its boss N bearing against the inner face 239 (Fig, 3) of the rear wall. The arm 242 of the bellcrank 235 which is crooked and turned over at right angles 'at its end 24|, is turned in the direction of the arrow d (Fig. 5) by a spring 25| suspended on the arm at one end. The other end of the spring is held by a pin-not shown-in the machine frame The end 24| of the bellcrank 235 acts on the upper end edge 243 of a slide 244. The slide 244 has longitudinal slots 245 and 246 placed on the shanks of screws 241 and 248 and in its initial position is held on the Shanks of the screws with the upper rounded ends of its longitudinal slots by spring 25|. The screws 241 and 248 are held by angular brackets 249 and 2'50 (Figs. 1 and 2) arranged at the machine frame The lower end 252 of the slide 244 is engaged under elastic pressure by the edge 254 of a lever 253. This lever is fulcrumed about a rivet 256 on the subtotal taking key lever 255. A springv 258 connected to the arm 251 of the lever 253 at one end is held by the subtotal taking key lever 255 at its other end. By these means an elastic buffer is provided by which the tail end 4|| of the subtotal taking key lever 255 is connected to the slide 244.

The subtotal taking key lever 255 is fulcrumed about a screw 259 at the bearing frame 5 and is engaged by one end of a spring 260 whose other end engages a pin 26| (Figs. 1 and 2) at the bearing frame 5.

The lever, or manually operated member, 255, and the spring 260 make up an energy accumulator for the extra totalising means |2|, |00.

The pull of the spring 260 turns the subtotal key lever 255 anti-clockwise until it is arrested by a chock-not shown-of its guide.

A bar 262 extending at right angles from the subtotal taking key lever 255 extends over the edge 263e of the total taking key lever 263. A hook 265 is fulcrumed on an eye 264 of the total taking key lever 263 by a screw 266 (Fig. 4). A spring 268 engaging an eye 261 of the hook is held by a bore 269 in the total taking key lever 263 and tends to turn the hook 265 in the direction of the arrow e. A lug 210 extending at right angles from the hook engages the edge 263a of the total taking key lever 263. An incline 21| of the hook 265 can be inuenced by the edge 212 of an angular member 214 which is secured to the bearing frame 5 by screws 213, as will be described below. e

A lever 215, Fig. 5, is pivotally connected to the rocking device ||9. The lower end of the lever is fulcrumed about a pin 216. The pin, in turn, is secured on a lever 211'Which is mounted to swing in the bearing frame 5 and forms part of the typewriting mechanism. This mechanism has only partly been shown and described. The lever 211 swings the typewriting frame and is mounted to swing in the bearing frame 5. An eye 21B is formed on the end rf the pin 216 and a spring 219 secured to the eye, and to the abovementioned pin 26| at its free end, places the end 280 of the lever against the cam plate |43a.

As briefly mentioned above, the total taking key lever 263 can act on a rod |50 by its tail end |48 (Fig. 4). The upper end 28| of the rod is pivoted to the horizontal arm 282 of a bellcrank which is fulcrumed on the front wall 29 of the casing of the calculating mechanism. With the vertical arm 283 forked at its end 284, the bellcrank engages a pin 286 secured to a slide 285. The slide 285 is mounted at the front wall 29 of the casing of the calculating mechanism, to swing about, and to slide on, a screw 281 whose shank it engages with a slotted eye 288. An incline 289 on the slide 285 is arranged to engage below a lug 290 of a flap 226 equipped with zero setting stop teeth 29|. The flap is mounted to swing about a screw 293 at the front wall 29 of the casing of the calculating mechanism. A spring 292 pulls the iap anti-clockwise until its edge 293e engages a xed pin 294 in the front wall 29 of the calculating mechanism. A push rod 295 is'guided in a slot 291 (Fig. 1) with its front end 296 (Fig. 7). The slot is in the front wall 2 of the casing of the calculating mechanism, and the push rod is pivoted to an arm 298 secured on the locking shaft 13, and equipped with an incline 299 which can act on the lower edge 300 of the slide 285. l

The unlocking slide |2| (Fig. 6) can engage, with the lower edge 30| of its U-bracket |24 the edge 302 of a pawl 303. The paw] is mounted to swing about a rivet 306 on a lever 304 and is inuenced by a spring 305 whose ends are held by a bore 301 in the pawland a bore 308 of the lever y304 which supports the pawl. Under the pull of the spring 305 the pawl 303 tends to engage a check 309 on the lever 304. The lever 304 is fulcrumed on a screw 3|0 secured in the front wall of the casing 3 Iof the calculating mechanism. The upwardly extending arm 3|| of the lever 304 is pivotally connected to a rod 3|'2. This rod is joined with a link 3 I3 by screws 3|4. The holes for the admission of the screws 3|4 in the rod 3|2 are made as slots 3|5 so that a certain possibility of adjustment is provided for. The link 3|3 is guided by a screw 3|1 Whose shank extends through the slot 3|6 in the link and which is secured to the casing of the calculatingmechanism. The upwardly extending portion 3|8 of the link 3|3 engages a pin 320 on a slide 3|9 with its forked end. The slide 3|9 is guided on an angular bracket 323 (Figs. 1 and 3) by means of screws 32| whose shanks extend through its slots 322. The bracket 323 is secured to a part 324 which is secured to the right-hand side of the casing of the calculating mechanism by a flange and serves as a bearing for the main driving shaft |4|.

The slide 3|9 has an arm 325 extending at right angles and. engaging in the groove of a coupling sleeve 223. A T-shaped member 321 secured to the slide 3|9 by screws 326 has an arm 328 which in the initial position of the slide 3|9 engages in a gap of a spur gear 220. A spring 329 engages the slide 3|9 and its free end is held by a part 324 (Figs. 1 and 3). Under the pull of the spring 329, the slide 3|9 and the link 3|3 bear against the Shanks of the screws 32| and 3|1 with the left-hand ends of their slots 322 and 3|6, defining the initial position of the said slide. An angular bracket 330 (Fig. 1) which is secured to the part 324, serves as a further bearing for the main driving shaft |4| and for guiding the lengthening lever |86 which belongs t0 the coupling system |18, |16.

The subtotal taking from the totalisers 16 and 17 and the drive of the totalisers 18 and 19 The value 5500 which is calculated in the totaliser I6 must now be withdrawn from this totaliser by subtotal taking and written down on line III, column C, of the form. Since this normally occurs in connection with "the last item booked on a day, and consequently in the present instance after the value 55 has been accounted, the 1000 tabulator key lever of the decimal tabulator I which corresponds to the value 5500 (Fig. 3) is now depressed.

Hereby the totaliser |6 (Figs. 1 and 11) comes into driving connection, with the driving wheel |14 (Fig. 2) of its 1000 place, with the main driving Wheel |12. At the same time, the totaliser I1, with its driving wheel |14 of the same place, comes into driving connection with the spur gear |83. Besides, the driving wheel |14 of the 1000 place of the totaliser I8 meshes with the spur gear 220. Since the value 5500 which is present in the totaliser |6 was introduced by addition, it must be withdrawn by subtraction. To this end, the totaliser I6 is equipped with a controlling plate 22 (Fig. 2) which now acts on the controlling lever 34 (Fig. 7) and reverses the known reversing mechanism which determines the species of calculation, to the driving connection 66, |40 (Fig. 6), by means of parts 36 (Fig. '1), 31, 38, 39, 40, 36a, 43, 60, 6|, 62 and 64.

As the totaliser |6 has no controlling plate 2| (Fig. 2) for the uncoupling of the driving wheels, the coupling sleeves 23, 24 and 26 remain in their initial positions. Furthermore, the totaliser |6 acts on the lever 204 (Figs. 3 and '1) with its controlling plate 20 (Fig. 2). This lever which is mounted on the main driving shaft |4l, is turned clockwise and its tooth 335 (Fig. 7) is moved out of active position with respect to the lever 336. The calculating mechanism is now free for unlocking from the locking shaft 13.

In order that the value 5500 which is withdrawn from the totaliser I6 through subtotal taking can be introduced into the totaiiser i8 which is in calculating position with the spur gear 220 (Figs. 6 and 11) in positive form, this is equipped with number rollers |1|.

The subtotal taking key lever 255 (Figs. 2, 3 and 4) is now depressed and its bar 262 (Fig. 4)

drives the total taking key lever 263. Its tail end |48 now raises the rod |50 (Fig. 7) which turns the bellcrank 282, 283 clockwise. As the bellcrank engages the pin 286 with the forked end 284 of its arm 283, the pin and the slide 285 are shifted in the direction of the arrow f. During this movement the incline 289 engages below the lug 290 of the flap 226 and raises the flap in the direction of the arrow o until its. zero setting stops 29| `are arrested at a short distance from the path of the known zero setting teeth belonging to the zero setting wheels 340 (Fig. 2). At the same time the subtotal taking key lever 255 (Figs. 2 and 4) acts on the slide 244 with its lever 253 (Figs. 2, 4 and 5) and moves the slide in the direction of the arrow K. The slide, in turn, engages the bellcrank 235 with its upper edge 243 and turns the bellcrank clockwise so that its arm 231 moves into the path of the pawl 228 on the unlocking slide |2l. The tail end |46 (Fig. 4) has now moved away from the coupling arm |45 and released the arm whereupon the tooth |46 on the arm engages in the spur gear |41 and couples the cam plates |42 and |43a with the driving shaft |44. The tooth |53 of the locking member |52 which is fulcrumed on the total taking key lever 263, now moves under the face 34| of the locking bar |64 under the action of the spring |55 so that the total taking key lever 263 is locked in its depressed position. In this position the edge 342 oi the locking member |62 is below the lower end 343 of the rod |61.

While the total key lever 263 is moved downwards under the action of the bar 262 on the subtotal taking key lever 266 the hook 265 fulcrumed on the total taking key lever 263 strikes with its incline 21| the edge 212 of the angular member 214 (Fig. 2) and is turned against the spring 266 and the arrow e. A tooth 344 on the hook 265 engages the bar 262 of the subtotal taking key lever 255 and locks this in its active position while the total taking key lever 263 remains in locked position.

The cam plates |42 and |43a which are driven by the coupling operation described above, now rotate clockwise. The cam plate |42 releases the roller |43 of the unlocking slide 2| which now descends under the pull of its springs 226. The incline |22 of the unlocking slide |2| strikes the locking flap |02 (Fig. 5) and turns it clockwise. 'Ihe rib |0| of the guiding body |63 supporting the locking flap bears against the edge |06 of the lever |01 and turns the lever clockwise, and with it the parts 93, 61, 66, 65 and 64. In this manner the spur gear 6| is shifted in the direction of the arrow h and meshes with the teeth 69 (F18. 6) of the zero setting slide.

In the meantime, the lever |06 (Fig. 5) moves behind the tooth ||0 of the rocking device and is locked there. The guiding body |03 furthermore causes the lever |05 which is firmly connected to the locking shaft to partake in its movement, whereby the locking shaft 13 is also turned clockwise. The tooth 12 (Fig. 5a) releases the spur gear 10. The unlocking levers 336 unlock the 1000 places of the totalisers I5, I1, and I8 which are in calculating position, by means of the part 331 (Fig. 2), and the lever 14 (Fig. 5) moves the totaliser sector 19 into mesh with the spur gear 60 by means of parts 15, 16, 11 and 16. At the same time the push rod 265 (Fig. 7) is moved in forward direction and its incline 296 raises the slide 285 in the direction of the arrow a, so that the nap 226 with the zero setting stops 29| moves into the path of zero setting teethnot shown--allotted to the zero' setting wheels. Thereupon the unlocking slide 12| (Fig. 6) acts on the pawl |26 with edge |23 of its U-bracket 345, turns the pawl clockwise. turns the locking lever |26 in the same direction. moves the tooth |30 out of the teeth |3| of the vzero setting slide |00 and so releases this slide.

At the same time, the edge 30| of the U-bracket bar 345 acts on the edge 302 (Fig. 6) of the pawl 303 and turns this, and the lever 304, in the direction of the arrow m. The parts 3|2, 313, 320 and 3|9 are shifted in the direction of the arrow n. The slide 3|9 withdraws its tooth 32| from the gap in the spur gear 220 and, through arm 325, moves the coupling sleeve 223 with its crown teeth 222 in engagement with the teeth 22| of the spur gear 220.

and with it the shaft 61, are now rotated clock- -wise by the teeth 99 of the zero setting slide |00 with the driving wheel |14 of the 1000 place of the totaliser I6, now rotates the wheel |14 until the above mentioned Zero setting tooth of the corresponding zero setting Wheel 340 (Fig. 2) engages the zero stop 29| (Figs. 2 and '7). While the 1000 place of the totaliser I6 is set to zero, the spur gear 80 (Fig. 5) is also rotated from the spur gear 9|. As the spur gear 80 has been previously moved into mesh with the sector 19 the sector is now swung in the direction of the arrow q against the spring 89, for a corresponding number oi pitches. The totaliser I6 now displays 0 in the 1000 place of its window while the 1000 place of the totaliser I1 is moved to 9 from 4.

While the value 5 is withdrawn from the 1000 place of the totaliser I6, it is introduced in positive form into the totaliser I8 by the spur gear 220 (Fig. 6) meshing with the driving wheel |14 (Fig. 2) of the same place in the totaliser I8. The number roller |1| of the 1000 place of the totaliser I8 now displays 5 in the window.

After the zero setting slide (Fig. 6) has attained its lower final position, as determined by the zero setting tooth on the zero setting wheel 340 (Fig. 2) engaging the zero setting stop 29| (Figs. 2 and 7), the unlocking slide I2| still descends for some distance. The edge 30| of its U-bracket releases the pawl 303 which now enters the recess 36| of the bracket 345 with its part 360 under the pull of spring 329. In this manner the parts 304, 3|2, 3|3 and 3|9 are returned into their initial positions. The arm 325 of the slide 3|9 moves the coupling sleeve 223 to disengagev its teeth 222 from the teeth 22| of the spur gear 220 while at the same time the tooth 328 of the slide again enters the gap of the said spur gear which is presented to it. Then the elevated p0rtien |4311 (Fig. 17) of the cam plate I43a (Fig. 4)

acts on the end 280 of the lever 211 and turns it clockwise, whereby the value 5 is printed. The printing mechanism of the Mercedes is known, and will not be described here as it is no part of the invention.

During the rocking movement of the lever 211 the lever 215 which is connected to said lever 211 by the pin 216 and is pivotally connected to the rocking device I I9 turns the rocking device clockwise around the screw |20. Hereby the edge ||8 of the rocking device H9 acts on the slide II6 (Fig. 5) which is raised. The slide II6 turns the other rocking device II clockwise around the shaft I I2. Consequently the tooth ||0 of the rocking device III releases the lever |09. In the same moment the incline |22 of the unlocking slide I2 I ,releases the locking flap |02 and a spring 346 which engages the lever |01, moves the spur gear 9| out of mesh with the zero setting slide |00 through parts 96, 96, 91, 94 and 95. Simultaneously the face |06 of the lever I 01 acts on the projection |0I of the locking flap |02 and returns the locking flap |02 which is loosely arranged cnr the shaft 13 into its initial position. On the of the bell-crank 235, as described in the paragraph Preparation of the subtotal taking from the totalizers I6 and I1. .Since the locking shaft 13 is held against rotation, the totalizing sector 19 is held in mesh with the spur gear 80 through the arm 14 secured on the locking shaft, and the slide 16 controlled by the arm 14.

As soon as the -driving connection between the zero setting slide |00 (Fig. 6) and the spur gear 9| has been broken again, springy 89 swings the totalising sector 19 into its initial position against the direction of the arrow q, and the spur gear isrotated in the opposite direction. This movement is transmitted to the main driving shaft I4| through the pair of gears 66 and I 40, and the main driving shaft transmits it to the driving wheels |14 of the 1000 parts of the totaliser I6 and I1 through the main driving wheel |12 and the spur gear |83. The value 5 which has previously been written out, now appears on the corresponding number roller |10 of the totaliser I6. On the corresponding number roller I1I of the totaliser I1 the complementary value 4 is displayed in the window. However, the value 5 is not withdrawn from the totaliser I8 since, as mentioned above, the coupling 223 was uncoupled before the return of the totalising sector 19.

The elevated portion of the cam plate |42 now moves the unlocking slide I2I up again and the slide, through parts 365 (Fig. 6), 366 and 361 returns the zero setting slide into its initial position. Arrived in its topmost position, the unlocking slide |2I, through the edge |22 which it has in common with the pawl 228, releases the lug 233 of the lever 232 which is firmly connected to the locking shaft, so that the lever can move forward again. The unlocking levers 33611 now move into their initial positions, the lever 14 disengages the totalising sector 19 from the spur gear 80 over parts 15, 16, 11 and 18, and the point 1I of the lever 12 enters one of the gaps in the gear wheel 10, locking the calculating mechanism.

When these operations have been completed and the value 5 has been reintroduced into the totaliser I6, and the value 4 into the totaliser I1, the carriage moves for one step since it is released by the typewriting operation. In the operation of the Mercedes as designed heretofore, it has been found that when the carriage was fed through one step, the values had not yet been reintroduced into the totalisers. The cause is that the disengagement of the spur gear 9| from the teeth 99 of the zero settingA slide |00 by the slide I|6 occurs earlier than had been intended. Extra means might have been provided for arresting the carriage until the values had been reintroduced, but it was preferred not to derive the actuation of the slide IIS from the swinging frame |4319 (Fig. 16), by which the carriage feed is operated, but from the swinging lever 211 which effects the typewriting operation. The end 280 of the lever 211 is engaged by the edge |43d of the cam plate |4311, which rotates in the direction of the arrow, much earlier than the roller I43 of the rocking frame |43b. The consequence is that the disengagement oi the spur gear 9| and the zero setting slide |00 occurs earlier and the spring 89 which operates the totalising sector 't9 can swing the sector back completely before the carriage feed commences. Therefore, the velocity of operation is not deteriorated by the subtotal taking operation.

In the other places of the totaliser I6, subtotal taking is effected in the same manner as explained above with reference to the 1000 place.

When the item 5500 has been withdrawn from the totaliser I6, written in column C, line III of the form in Fig. 9, and transferred to the total- -iser I8, a dog 310 (Fig. 1) of the totaliser I6 engages the pawl |64 (Fig. 7). The pawl swings the arm |58 on which it is arranged, anticlockwise about the screws |59. This lowers the rod |51 Whose lower edge 343 (Fig. 4) now engages the edge 342 of the locking member |52 and turns this in the direction of the arrow r against the spring |55. This moves tooth |53 of the locking member |52 clear of the locking bar |54 and the total taking key lever 263 is returned into initial position by its spring 315. The subtotal taking key lever 255 is raised by the bar 262. This lever has been released by the tooth 344 of the hook 265 by the incline 21| of the hook 265 leaving the angular member 214, and is now returned into its initial position by the pull of its spring 260. The bellcrank 235 is rotated in the direction of the arrow d by its spring 25| (Fig. 5) and returns into its initial position, as determined by the upper rounded edges of the slots 245 and 246 in the slide 244 engaging the Shanks of the screws 241 and 248.

After the value 5500 has been transferred to the totaliser I8 the carriage is returned into its nal position at the right by depression of the carriage return key 9, and at the same time a line is fed. The credit item 6738 on line IV in Fig. 9 must now be written and calculated in the totaliser I1.

For this purpose, the totalisers I4 to I1 are, with their 1000 places, moved into calculating position with respect to the spur gear |95 (Fig. 12), the main driving wheel |12, and the gear wheels |83 and |13 by corresponding operation of the decimal tabulator I0. The wheels |95 and |12 move idly as the dummies I4 and I5 are without mechanism. But the spur gears |83 and |13 mesh with the driving wheels |14 (Fig. 12) of the totalisers I6 and I1. As the totaliser I1 is negative and the credit item must appear in positive form in this totaliser, the reversing mechanism 66, |31, |38, |39 and |40 must be placed in subtraction position. This is effected by the controlling plate 22 in the dummy I5 acting on the controlling lever 34 (Fig. 7) and turns it clockwise. By means of the parts 36, 31, 38, 39, 40, 39a, 43, 60, 6|, 62 and 64, this movement is transmitted to the spur gear 6,6 which is equipped with a coupling sleeve and now meshes with the spur gear |40 (Fig. 5). The dummy I5 is without the controlling plate 2| so that the coupling sleeves 23, 24 and 25 remain in their initial positions, as shown in Fig. 6. If the value 6738 is now introduced it is transferred in positive form to the number rollers of the totaliser I1 (Fig. l2), and in negative form to the number rollers of the totaliser I6, as described above. In this manner, the credit item 6738 is accounted with the total of all items of the first day, i. e. the debit item 5500. In the totaliser I1 appears the positive value 1238 and in the totaliser I6 appears the complementary value 9999 8762.

Since the value 1238 has been introduced in the totaliser I1 by subtraction, it must be withdrawn from the totaliser by addition. Therefore, the totaliser I 1 is without a controlling plate 22 but it has a controlling plate 2| for uncoupling the coupling sleeves 24 and 25. The totaliser I9 cooperating with the totaliser I1 has positive number rollers as it is operatively connected to the calculating mechanism adjusted for addition in its calculating position, as described below, on account of the construction of the totaliser I1.

If subtotal taking is to be performed from the totaliser I1, the totaliser must be placed in active position with the main driving spur gear |12 with its 1000 place. In the manner which has been explained several times, the calculating mechanism is unlocked by the controlling plate 20 acting on the lever 204. As the totaliser I1 is Without a controlling plate 22, the calculating mechanism remains in its addition position, as determined by the position of the wheels 68, |31, |38, and |39. With its control plate 2|, the totaliser I1 turns the upper end |15 of the controlling lever |16 (Fig. 6) in the direction of the arrow b and the slide |18 and its lengthening lever |86 are moved so far that the shank of the rivet 202 of the slide |18 moves into slight engagement with the rounded edge 203 of the slot 20| in the member 200. In consequence thereof, the spur gears |83 and |94 are disconnected from the main driving shaft I4I (Fig. 13) by shifting the coupling sleeves 24 and 25 while the spur gear remains in its driving position. Thereby the totaliser I6 at the left of the totaliser I1 is in active engagement with the spur gear |95 with its 1000 place. This is necessary since this totaliser calculates the balance of the debit items.

When the totaliser l1 moves into calculating position to the main driving wheel |12, the totaliser I9 (Fig. 13) moves into active position to the spur gear 220 with its 1000 place. The totaliser I8 at the left of the totaliser I9 is not operated, as the corresponding spur gear |94 has previously been uncoupled.

The subtotal taking key lever 255 is now depressed and the value |238 is withdrawn from the totaliser I1 in the manner described for the value 5500, transferred to the totaliser I9, and written on line IV, column D of the form in Fig. 9.. In the totalisers I6 and I1, the values are conserved, since subtotal taking has been effected.

As there was no turnover on January 3, as shown on the form in Fig. 9, the subtotal 1238 is again withdrawn from the totaliser I1 so that The total taking from the totalisers 18 and 19 As explained in a preceding paragraph, in the present accounting example the interest numbers which have been found in the columns C or D of the form and added in the totaliser I8 or I9, are to be written on line XII in columns F and G of the form.

To this end, the 10,000 tabulator key of the decimal tabulator I0 corresponding to the highest place of the value 59,780 (Fig. 14) now calculated in the totaliser I8 is depressed. 'I'he totaliser I8, through its driving wheel |14 of the 10,000 place, comes into operative connection with the main driving wheel |12. The form, Fig. 9, comes into writing position with column F. When moving into the aforesaid position, the

totaliser I8, by its controlling plate 20 again releases the locking of the calculating mechanism and, by its controlling plate 2|, it oper-4 ates the controlling lever |16 in such a manner that the coupling sleeves 24 (Fig. .14) 25, and 23 are uncoupled through parts 20|, 202 203, 200 and |99. Furthermore, the controlling plate 22 on the totaliser I8 acts on the controlling lever 34 (Fig. 7) and the reversing mechanism 66 (Fig. 6), |31, |38, |39 and I40.is changed from its present addition adjustment into subtraction position, characterized by the connection 66, |40.

As the value 59,780 calculated in the totaliser I8 was introduced from the totaliser I6 into the totaliser I8 by subtraction during subtotal taking, the total is now taken by addition and therefore the general change over key lever must be depressed. The three-armed lever 41 (Fig. '1) is turned anti-clockwise and against the pull of the spring 53, whereby the slide 43, through pinand-slot connection 45, 44, is turned anti-clockwise about its pivot on the leverl 60. In this manner the pin 39 of the rocking device 40 moves out of the notch 39a of the slide 43 and the pin 42 of the rocking device moves into the notch 42a of the slide 43. The pin 42 engages the edge 400 of the notch in the slide and moves the slide in the direction of the arrow r. The lever 60 is hereby turned clockwise. The calculating mechanism now moves into addition position, as determined by the cooperation of parts 66, |31, |38 and |39. At the same time the rod 56 is lowered by the general change over key lever 50 and depresses the shift key lever 58 by means of the rivet 58a, andthe platen is now shifted. In this position, italics are printed. When the general changing over key lever 50 has attained its lowermostposition, the cancelling key lever 40| is jerked to the front and its step 402 engages over the edge 403 of the general changing over key lever. This lever is now locked in its depressed position. When the total taking key I2 (Fig. 4) is now depressed, the tooth 344 of the hook 265 which is pivoted thereon, moves past the lower edge of the bar 262 on the subtotal taking key lever 255, without influencing the bar. The total taking operation and the writing down of the value 59,780 new occurs in the same manner as in the Mercedes referred to above.

After the ltotaliser I8.has been clear written and the vcorresponding value has been entered in column F of the form in Fig. 9, the total taking key lever 263 is released as in the Mercedes.

Thereupon, in conformity with the value calculated in the totaliser I9 (Fig. 15) which is 4251, the 1000 key lever of the decimal tabulator I is depressed. By these means, the totaliser I9, with the driving wheel |14 (Fig. 15), of its 1000 place, comes into operative connection with the main driving wheel |12 of the calculating mechanism 3. The totaliser I8 is in the region of the spur gear |94 but is not oper-a ated, as it has been uncoupled by the controlling plate 2| of the totaliser I9, like the spur gears |83 and |94, The totaliser I9 unlocks the locking of the calculating mechanism by the controlling plate 20 and has no controlling plate 22. But, as the general changing over key 59 (Fig. 1) is still depressed, the reversing mechanism whichserves for the variation ofthe species, now assumes its subtraction position, as determined by the cooperation of parts 66, |31,

. gaged |38 and |39. The total taking key I2 is now depressed whereupon the totaliser I9 is clearwritten in the manner known, and the value 4251 it contains, is written in column G of the form.

When the total taking key lever 263 has been returned into its initial position, the cancellation key lever 40| is depressed so that the general changing over lkey 59 can be returned into its initial position. y

In the same manner the totalisers I6 and I1 are clearwritten, if necessary.

The subtotal taking device has here been described by way of example as employed for calculating interest numbers; this is neither its only, nor its most important, mode of application.

For instance, an important use is the transfer of numbers from the last line on one page of a sheet to the first line on the next page, for in this case the values must be conserved in the totalisers for further calculation. Obviously, the clutches on the shaft |4I are dispensed with, and only the main driving wheel |12 is required, as this is totalising work in the columns by themselves, and not accounting work of the several columns among each other.

In the elample illustrated, only a single totaliser I8 or I9 is arranged to be connected to the calculating mechanism in dependence from the unlocking slide |2I through parts 303, 304, 3|2,

' 3|3, 320 and 3I9. Obviously, two or more totalisers might be connected by the said parts.

We claim:

l. In a combined typewriter and calculating machine or the like, having a register, a manually operated lever for initiating subtotal taking operations, a zero setting slide member and an unlocking slide member, means controlled by said manually operated lever coacting with a numeral wheel of said register for limiting the movement of said zero setting slide member, a driving shaft, means adapted to be coupled with said driving shaft undercontrol of said manually operated lever, means for driving said zero setting slide to effect subtotal taking operations, a main calculating shaft, a connecting shaft, a reversible gearing intermediate said main calculating shaft and said connecting shaft, coupling means including a coupling Wheel slidable on said connecting shaft and adapted to be enwith said zero setting slide member to drive said main calculating shaft, `a rockable actuating segment movable into operative driving relation to the connecting shaft, and an energy accumulator for driving said segment, in combination, means operated by said unlocking slide member to control the driving relation between said rockable actuating segment and said connecting shaft, a member for initiating typing operations under control of said drive shaft coupled means, members driven by said initiating member for effecting disengagement of said coupling wheel from said zero slide member and thereby interrupt the driving connection between said main calculating shaft and said zero setting slide driving means, means controlled by said manually operated lever for maintaining the operative driving relation between said actuating segment and said main calculating shaft.

2. In a combined typewriter and calculating machine or the like, a manually operated lever for initiating subtotal taking operations, a zero setting slide member and an unlocking slide member, a main calculating shaft, a connecting shaft,

a rockable actuating segment movable into operative driving relation to the connecting shaft, and an energy accumulator for driving said segment, in combination, means operated by said unlocking slide member to establish operative driving relation between said segment and said connecting shaft, means on said unlocking slide member coacting with the drive establishing means under control of the manually operated lever for maintaining the driving relation between the segment and said main calculating shaft.

3. In a combined typewriter and calculating machine or the like, a manually operated lever for initiating subtotal taking operations, a zero setting slide member and an unlocking slide member, means adapted to be coupled with said driving shaft, a main calculating shaft, a connecting shaft, coupling means adapted to be engaged with said zero setting slide member, a rockable actuating segment, and an energy accumulator for driving said segment, in combination, means operated by said unlocking slide member to establish operative driving relation between said segment and said connecting shaft, a member for initiating typing operations under control of said drive shaft coupled means, members driven by said initiating member'for effecting disengagement of said coupling means from the zero setting slide member, means 0n said unlocking slide member coacting with said drive means under control of said manually operated lever for maintaining the driving relation between said actuating segment and the main calculating establishing Y shaft, a locking member operative under control oi said manually operated lever and swingable into the path of said maintaining means to lock the latter and the drive establishing means in the operative position for maintaining said actuating segment in operative driving relation w the main calculating shaft.

4. In a combined typewriter and calculating machine or the like, column totalizers, a manually operated lever for initiating total taking and subtotal taking operations, a zero setting slide member and an unlocking slide member, a main calculating shaft, a connecting shaft, a reversible gearing intermediate said main calculating shaft and said connecting shaft, a rockable actuating segment movable into operative driving relation to the connecting shaft, and an energy accumulator for driving said segment, in combination, means operated by said unlocking slide member to control the engagement of said rockable actuating segment and said connecting shaft, means for maintaining said engagement during displacement of the unlocking slide, a coupling member on the and means intermediate the main calculating shaft and the unlocking slide to establish operative driving relation between said coupling member and said main calculating shaft, said interrrediate means controlled by the unlocking slide in one direction of its motion for effecting driving of at least one of said column'totalizers.

ROBERT ANscH'rz. Farrz scHMnyr.

main calculating shaft, 

